bottom of one's heart; depths of one's mind; innermost thoughts; real intentions
base (of a polygon); bottom (of the social scale); lower levels; base (e.g. of support); foundation
bottom of the water; bottom of the sea; river bottom
palm heel; heel of the palm
original text; source book; draft
bottom; underside; base; base (of a polyhedron)
base; basis; basis (linear algebra); base (topology); basis
being connected at a fundamental level; having an unseen commonality; underlying (both)
planta; planta pedis; sole of the foot
well bottom; narrow place
orbital floor (thin bone floor of eye socket)
benthic organism; sea-bottom fauna; benthos
gastric fundus; curved upper left part of the stomach
base (of a logarithm); radix
bottom water (depth: 4000+ meters)
ocean floor; sea floor; seabed
bottom material; bed material; sludge; sediment; substratum
benthic animal; benthonic animal; zoobenthos
phlegmon in floor of oral cavity; Ludwig's angina
being a (total) mismatch; not fitting together; being ill-suited; poor fit; (lit.) square base, round lid