Meanings

bistable trigger circuit

bidirectionality

diapsids

style of sword fighting

amphiaster

birational

bipolar

to fall on one's shoulders (e.g. responsibility, duty)

pneumococcus (Streptococcus pneumoniae)

Diapsida (class of amniotes)

hyperboloid

twin talk

hyperbolic paraboloid

wait to turn either of two pairs into a three-of-a-kind to finish one's hand

sugoroku

duality

bilaterality (e.g. of a contract)

two trees

two-humped

double-hull boat